Bolster.



Nu. 643,572. Patented Feb. ls, |900.' w. F. VSS.

BLSTER.

(Application led Sept. 1899.;

(No Model.)

2 Sheets-Sheet l.

No. 643,572. Patented reb.- I3, |900. w. F. Voss.

BOLSTER.

(Application led Sept. 1, 1899.,

(No Mndel.) 2 Sheets-Sheet 2.

UNITED STATES PATENT OFFICE.

VILLIAM F. VOSS, OF WILMINGTON, DLAVARE.

BoLsTERV.

SPECIFICATION forming part of Letters Patent N o. 643,572, dated February 13, 1900. Application ned semmai-1. 1899. seri-.l1 No. 729,176. (remodel.)

To @ZZ whom it nea/y concern.:

Be it known that I, VILLIAM F. Voss, a citif I zen of the United Stat-es, residingat Wilmington, in the county of New Castle and State of Delaware, haveinvented certain new and useful Improvements in Bolsters, of which the following is a specification.

My invention relates to holsters, and in particular to those types which are adapted for use in connection with car-trucks and carbodies, the 'object being the production of an improved structure which will not appreciably deflect when subjected to 'severe strains in service-and allow theside bearings to come in contact each with thel other, which shall consist of few parts and be comparatively light in weight, which will have the mass of material composing the same properlydistributed, which will involve a mimimum amount of labor in its formation, and which,

withal, shall constitute a superior device for better performing the functions demanded of ordinary bolsters. l l

With the above main object in viewmy invention consists, objectively, in "a metallic bolsterhavinga longitudinal openingor openings and the metal above and below the opening or'openings and at the ends integral and a king-post.

It further consists in a bolster composed of two flanged beams, each beam having its web split and the flanges spread apart and said bolster provided with a king-post.

It still further consists in a bolster composed of parallel flanged beams suitably united, each beam having an opening at the center and provided with a king-post and of greater depth at the center than at the ends.

Finally, itconsists in certain novelties of construction and arrangements and combinations f parts hereinafter set forth and claimed. y

The accompanying drawings illustrate three pictured examples of the physical embodiment of the invention constructed and arranged according to the best modes or methods I have so far devised for the practical application of the principle.

Figure l shows one form of my bolster as adapted for use with a car-truck. Fig. 2 is a sectional View of Fig. l. Fig. 3 illustrates a form of the bolster adapted for use asa carbody bolster. Fig. 4 is a perpendicular crosssectional view of Fig. v3, taken at the center. Fig. is a perpendicular cross-sectional view lof a bolster in which theA main elements consistr ofY channel-beams.

Referring to the several figures, the letter A designates the ordinary diamond frame of ay car-truck.

B is the bolster as a whole.

C C are I-beams, which constitute the main of both beams.

.76 F is a metallic plate riveted to the top flanges G is a metallic plate riveted to the bottom flanges of the beams;

H is one of the bolster-guide castings riveted to the web of an I-beam. c Y Y Ils a brake-hanger carrier made integral with the guide-casting, and J is a center plate.

It will be observed that the two forms of the bolster shown specifically in Figs. l, 2, 3, and 4t are respectively adapted foiuse with a card truck and asa body-bolster for cars. The former has both flanges of each Lbeanl bent on a curve during the process of stretching to make the openings D D, whereas in the latter form the lower flanges of the beams only are stretched, the upper ones retaining their straight horizontal shapes, so as to fit the bottom of the car-body.

In Fig. 5 the letters K K designate channelbeams, which may be used in lieu of I-beams when so desired. I have shown these channel-beams located in parallel perpendicular planes some distance apart. They may, however, be so located that the webswill be in frictional contact or a short distance apart, when a single kingpost only may be employed for both beams.

' I prefer to use in the construction of my bolster commercial rolled or fashioned iron or steel beams-such, for instance, as shownin which the webs are of substantially uniform thickness and the flanges of uniform dimensions, inasmuch as such beams can be IOO obtained in open market at a low price as compared with beams which are of a complex or irregular form.

From the foregoing it will be seen that I have produced a bolster which fulfils all the conditions set forth as the purpose or object of my invention. In cach form shown the greatest depth is at the center, where the weight of the load is supported, the beams are integral at the ends, the webs are in parallel perpendicular planes, and the mass of metal properly distributed in a manner proportionate to the strains to which it is or may be subjected.

Thile I have specically illustrated and described only three pictured forms of the objective physical embodiment of my in vention, I do not thereby intend to limit its scope to such examples, inasmuch as the same can be embodied in other forms and shapes. Modiiications in construction may likewise be introduced. For theI-beamsorchannel-beams may be substituted Z or other shaped beams. The beams may be united b v other means than the identical top and bottom metallic plates F and 4Gr and king-posts of a different shape from those illustrated may be used. These and many other changes may be introduced at the discretion of the manufacturer without constituting a substantial departure.

That I claim as new, and desire to secure by Letters Patent, is-

l. A composite bolster made of beams hav` ing webs of substantially uniform thickness arranged in parallel perpendicular planes and iianges of uniform dimensions; said bolster having a central opening, and being provided with means for uniting the beams, and a king-post.

2. A bolster comprising two flanged beams having their webs split and the fianges separated to form openings; means for uniting the beams; and a king-post; lthe webs of the said beams being of substantially uniform thickness.

3. A bolster comprising two flanged beams having their Webs split and the lower flanges bent to form openings; means for uniting the beams; and a king-post; the webs of the beams being of substantially uniform thickness.

4. A bolster comprising two ianged beams having their webs split and flanges separated; top and bottom plates which unite the beams; and a king-post.

5. A composite metallic bolster comprising two flanged beams having central openings, D I); king-posts, E E; a top plate; and a bottom plate.

6. A metallic bolster comprising two channel-beams provided with webs of substantially uniform thickness located in parallel perpendicular planes, and having a central opening; means for uniting the beams; and

a king-post.

WILLIAM F. VOSS.

Vitnesses:

CHARLES C. KURTZ, ALLIsoN N. KIMMLEY. 

